The elfitor device is a small non invasive device that uses dynamic light scattering to measure skin bloodflow, blood velocity, coagulation and hemodynamic parameters. In this study, the investigators will investigate whether the elfitor device is able to detect changes in bloodpressure, cardiac output during general anesthesia. Furthermore, the investigators will investigate changes in cutanuous blood flow in different parts of the body during peripheral nerve or neuraxial block.Being able to monitor these entities, under- and overdosing of general and local anesthetics may be prevented, resulting in favorable hemodynamics and better intra and postoperative pain relieve.
Study Type
OBSERVATIONAL
Enrollment
60
Leiden Medical University
Leiden, South Holland, Netherlands
Blood pressure
bloodpressure will be compared using conventional techniques and elfitor
Time frame: up to 1 day
Neuraxial block
neuraxial block will be compared using conventional techniques and elfitor
Time frame: up to 1 day
Cardiac output
during induction of anesthesia the effect of anesthetics or neuraxial blok on cardiac output will be recorded
Time frame: up to 1 day
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